The application consists of 2 projects:
- MyStore - UWP App client
- MyStore.BL - UWP class library (contains both business logic and data access logic (via EF core))
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DB: SQLite
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DB Access: EF Core
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MVVM/IoC: Prism.Unity
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Notifications via NotificationsExtensions library:
- Live Tiles
- Badge Notifications
- Background Tasks (updating tiles & badges)
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Main: Container for all other views. Hosts application's header (app title, menu button and shopping cart button) and an extractable side menu. The rest of the view is a placeholder frame for other views.
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Catalog: Displays a product card (picture, title, price) for each product in catalog, while beneath each card there's a button, allowing to add it to shopping cart.
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Shopping Cart: Lists all shopping cart items in a table view, allowing to manipulate quantities, delete items and commit a checkout (place an order).
| Table | Remarks |
|---|---|
| Catalogs | A Catalog is a group of products that share a common subject |
| Products | A Product is associated with a catalog (currently only one catalog per product(1)) |
| Customers | A customer is based on the current user logged in Windows |
| ShoppingCarts | A shopping cart is associated with a customer |
| ShoppingCartItems | A shopping cart item is associated with a shopping cart and a product. |
| Orders | An order is basically a copy of a shopping cart after checkout, and is also associated with a customer. |
| OrderItems | An order item is a copy of a shopping cart item after checkout, and is associated with an order and a product. |
(1) if you need to associate a product with multiple catalogs, it is adviced to create a new table, e.g. CatalogsProducts, which will link between catalogs & products. The new table will replace the field CatalogId in Products table.
- Model - Reflects the table fields and inherits from Equatable<T> (also implements IEquatable<T> in order to allow explicit implementation).
- View Model - Inherits from ViewModeBase<T>, which in turn inherits from Prism.Windows.Mvvm.ViewModelBase.
- Data Repository/Controller - Implements IDataRepository<T>.
In case the application terminates unexpectedly, and the following error apears in Windows Event Viewer - try the following solution to fix that.
Event Viewer Log Message:
The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID {CLSID} and APPID {APPID} to the user from address LocalHost (Using LRPC) running in the application container Microsoft.Windows.Cortana... This security permission can be modified using the Component Services administrative tool.